Electromagnetic Transport From Microtearing Mode Turbulence

Guttenfelder, W ; Kaye, S M ; Nevins, W M ; Wang, E ; Bell, R E ; Hammett, G W ; LeBlanc, B P ; Mikkelsen, D R

Princeton University. Plasma Physics Laboratory.

关键词: Tokamaks, Turbulence, Gyrokinetic Simulations;    Magnetic Fields;    70 Plasma Physics And Fusion Technology;    Trajectories;    Transport;   

DOI  :  10.2172/1010969
RP-ID  :  PPPL-4609
RP-ID  :  DE-ACO2-09CH11466
RP-ID  :  1010969

美国|英语

来源: UNT Digital Library

【 摘 要 】

This Letter presents non-linear gyrokinetic simulations of microtearing mode turbulence. The simulations include collisional and electromagnetic effects and use experimental parameters from a high beta discharge in the National Spherical Torus Experiment (NSTX). The predicted electron thermal transport is comparable to that given by experimental analysis, and it is dominated by the electromagnetic contribution of electrons free streaming along the resulting stochastic magnetic field line trajectories. Experimental values of flow shear can significantly reduce the predicted transport.